﻿#region Copyright (c) 2003 - 2008, Andreas Mueller
/////////////////////////////////////////////////////////////////////////////////////////
// 
// Copyright (c) 2003 - 2008, Andreas Mueller.
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// which accompanies this distribution, and is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// Contributors:
//    Andreas Mueller - initial API and implementation
//
// 
// This software is derived from software bearing the following
// restrictions:
// 
// Copyright (c) 1994
// Hewlett-Packard Company
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Hewlett-Packard Company makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// Copyright (c) 1996,1997
// Silicon Graphics Computer Systems, Inc.
// 
// Permission to use, copy, modify, distribute and sell this software
// and its documentation for any purpose is hereby granted without fee,
// provided that the above copyright notice appear in all copies and
// that both that copyright notice and this permission notice appear
// in supporting documentation.  Silicon Graphics makes no
// representations about the suitability of this software for any
// purpose.  It is provided "as is" without express or implied warranty.
// 
// 
// (C) Copyright Nicolai M. Josuttis 1999.
// Permission to copy, use, modify, sell and distribute this software
// is granted provided this copyright notice appears in all copies.
// This software is provided "as is" without express or implied
// warranty, and with no claim as to its suitability for any purpose.
// 
/////////////////////////////////////////////////////////////////////////////////////////
#endregion


using System.Diagnostics;
using System;
namespace NStl.NUnit.Support
{
    [DebuggerDisplay("{Value}, ID: {ID}")]
    sealed class IdentifiableInteger : IComparable<IdentifiableInteger>
    {
        internal readonly int ID = UniqueIntegerFactory.NextID();
        private readonly int value;

        public IdentifiableInteger(int value)
        {
            this.value = value;
        }

        internal int Value
        {
            get { return value; }
        }

        public override bool Equals(object obj)
        {
            if(obj is int)
            {
                if((int)obj == Value)
                    return true;
            }
            IdentifiableInteger rhs = obj as IdentifiableInteger;
            if (rhs == null)
                return false;
            return Value == rhs.Value;
        }
        public override int GetHashCode()
        {
            return Value.GetHashCode();
        }
        public static bool operator==(IdentifiableInteger lhs, IdentifiableInteger rhs)
        {
            return Equals(lhs, rhs);
        }
        public static bool operator !=(IdentifiableInteger lhs, IdentifiableInteger rhs)
        {
            return !Equals(lhs, rhs);
        }
        public static implicit operator IdentifiableInteger(int i)
        {
            return new IdentifiableInteger(i);
        }
        public static implicit operator int(IdentifiableInteger i)
        {
            return i.Value;
        }

        public int CompareTo(IdentifiableInteger other)
        {
            return Value.CompareTo(other.Value);
        }
    }
}
